This page explains how Ann Alvarez (USATT# 48678)'s rating went from 1869 to 1868 at the NJTTC Monday League event from 14 Jan 2008. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.